Im planning on painting my hardwood floors in my room. The floor is pretty old, about 40 years or so, and the surface is not so glossy anymore. In some parts it is kind of sanded off a little, in other parts its a little glossy still but at the same a little rough. Well, like i said: old hardwood floors. Im still planning on sanding it a little ith that small hand power sander, and applying a coat of primer. My question is: do I use just any primer, or is it highly recommended to use a special type? Maybe I dont need to coat it with a primer at all? For the finish Im most likely going to use that Benjamin Moore latex enamel that says "Floor and Patio" on a can. Or Home Depopt also got something like that, 40 bucks a gallon. Which one do u reccomend?